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Jiang, Zhouqian; Tu, Lichan; Yang, Weifei; Zhang, Yifeng; Hu, Tianyuan; Ma, Baowei; Lu, Yun; Cui, Xiuming; Gao, Jie; Wu, Xiaoyi; Tong, Yuru; Zhou, Jiawei; Song, Yadi; Liu, Yuan; Liu, Nan; Huang, Luqi; Gao, Wei
Plant communications, 01/2021, Letnik: 2, Številka: 1Journal Article
Panax notoginseng, a perennial herb of the genus Panax in the family Araliaceae, has played an important role in clinical treatment in China for thousands of years because of its extensive pharmacological effects. Here, we report a high-quality reference genome of P. notoginseng, with a genome size up to 2.66 Gb and a contig N50 of 1.12 Mb, produced with third-generation PacBio sequencing technology. This is the first chromosome-level genome assembly for the genus Panax. Through genome evolution analysis, we explored phylogenetic and whole-genome duplication events and examined their impact on saponin biosynthesis. We performed a detailed transcriptional analysis of P. notoginseng and explored gene-level mechanisms that regulate the formation of characteristic tubercles. Next, we studied the biosynthesis and regulation of saponins at temporal and spatial levels. We combined multi-omics data to identify genes that encode key enzymes in the P. notoginseng terpenoid biosynthetic pathway. Finally, we identified five glycosyltransferase genes whose products catalyzed the formation of different ginsenosides in P. notoginseng. The genetic information obtained in this study provides a resource for further exploration of the growth characteristics, cultivation, breeding, and saponin biosynthesis of P. notoginseng. This study uses PacBio sequencing and Hi-C-assisted assembly technology to construct a high-quality, chromosome-level reference genome for the famous medicinal plant Panax notoginseng. Furthermore, this study investigates the biosynthesis of saponins in P. notoginseng and characterizes key UGT enzymes.
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in: SICRIS
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